#1  
Old 04-03-2013, 04:47 PM
Serf
 
Join Date: Apr 2013
Location: sacramento
Posts: 21
Default Clay/saw dust insulating layer over fire bricks?

Can you use a, clay slip/saw dust mixture, at the insulating layer over the firebricks or do you have to use vermiculite/perlite? Any advice would be helpful, thanks.
Reply With Quote
  #2  
Old 04-03-2013, 06:04 PM
stonecutter's Avatar
Il Pizzaiolo
 
Join Date: Jun 2007
Location: South Carolina,USA
Posts: 1,884
Default Re: Clay/saw dust insulating layer over fire bricks?

It would work but it wouldn't be very efficient. Save that technique for a cob dome.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Current WFO build -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


When we build, let us think that we build for ever.
John Ruskin
Reply With Quote
  #3  
Old 04-03-2013, 11:26 PM
Serf
 
Join Date: Apr 2013
Location: sacramento
Posts: 21
Default Re: Clay/saw dust insulating layer over fire bricks?

Thanks Stonecutter. Why do you say it wouldn't be very efficient?
Reply With Quote
  #4  
Old 04-04-2013, 07:43 AM
dimitrisbizakis's Avatar
Apprentice
 
Join Date: Dec 2012
Location: Greece
Posts: 132
Default Re: Clay/saw dust insulating layer over fire bricks?

Perlite and vermiculite is very cheap, don't risk with having insulating problems...this will make your oven unusable!

Last edited by dimitrisbizakis; 04-04-2013 at 01:12 PM.
Reply With Quote
  #5  
Old 04-05-2013, 01:09 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,787
Default Re: Clay/saw dust insulating layer over fire bricks?

Kiln builders often use clay and sawdust mix as insulation. It is a matter of cost. If you have access to free clay and free sawdust then free is the cheapest. Light straw clay, which is straw and slip (liquified clay) using just enough slip to bind the straw has been used for centuries as a very good insulator. Again if it is free then it's good. Probably not quite as good as vermiculite or perlite, but then you just make it a little thicker to achieve the same insulating value. The problem with all these mixes is the addition of the water. Suggest you do it in one inch layers with a week to dry in between and do it in dry weather.

Last edited by david s; 04-05-2013 at 01:12 PM.
Reply With Quote
  #6  
Old 04-05-2013, 02:51 PM
cobblerdave's Avatar
Il Pizzaiolo
 
Join Date: Jan 2010
Location: brisbane australia
Posts: 2,383
Question Re: Clay/saw dust insulating layer over fire bricks?

Gudday
Talking obout cheap and available .... Those 65 odd firebrick would be worth $4 each, easy a $250 investment. Availability.... not here is Ozzie unless your in a capital city, transport would then add to the cost and frustration.
Regards Dave
__________________
Measure twice
Cut once
Fit in position with largest hammer

My Build

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

My Door

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #7  
Old 04-05-2013, 05:38 PM
stonecutter's Avatar
Il Pizzaiolo
 
Join Date: Jun 2007
Location: South Carolina,USA
Posts: 1,884
Default Re: Clay/saw dust insulating layer over fire bricks?

Quote:
Originally Posted by mfugee1234 View Post
Thanks Stonecutter. Why do you say it wouldn't be very efficient?
If you compare it against other types of cheap insulation that do a better job..ie: perlite or vermiculite. But if that is what you have go for it...I would be interested to hear how it does.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Current WFO build -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


When we build, let us think that we build for ever.
John Ruskin
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vermiculite+portland cement to make fire bricks? What is fire clay? apples Getting Started 17 01-13-2013 01:14 AM
Fire bricks for Pompei oven Nick in Laval Pompeii Oven Construction 2 10-14-2012 01:03 AM
Red clay or fire bricks?????? bickmeier Newbie Forum 3 12-06-2010 04:27 PM
red Vs. fire bricks for the dome bickmeier Finding Building Materials 12 12-03-2010 04:30 AM
fire bricks boccu Getting Started 8 12-10-2006 11:38 AM


All times are GMT -7. The time now is 03:10 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC